Papek-clamp



UNITED sTATEs PATENT oEEIoE.

ARNOLD PALMER, OF LEE, MASSACHUSETTS.

PAPER-CLAMP.

Speccation of Letters Patent No. 21,775, dated October 12, 1858.

To all whom, (t may concern.'

Be it known that I, ARNOLD PALMER, of Lee, in the county of Berkshireand State of Massachusetts, have invented a new and Improved Form Pressor Clamp for Holding Paper Thile Being Trimmed; and I do hereby declarethat the following is a full, clear, and exact description of the same,reference being had to the annexed drawings, making a part of thisspecification, in which- Figure l, is a side sectional elevation of myinvention. Fig. 2, is a plan or top view of ditto.

Similar letters of reference indicate corresponding parts in the twofigures.

The object of this invention is to obtain a cheap and durable form pressor clamp, one that may be manipulated with great fa cility, far more sothan those of ordinary construction, and expedite the work of trimmingin a very considerable degree.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A, represents a bed piece to which an upright B, is secured, and C, is a'lever which is fitted in the upper part of said upright and works on afulcrum pin a.. To one end of the lever C, a bar D, is attached by a pin7), several holes being` made through the upper end of D, in either ofwhich holes the pin Z), may be placed as occasion may require, seeFig. 1. To the lower end of the bar D, a rectangular box E, is attachedby a joint c. The bottom of the box E, is perfectly smooth and worksdirectly over a bed F, which is attached to the bed piece A, the bed F.being faced with lead or other material which will not injure thecutting edge of the knife which cuts upon it as herein diescribed. Thebed F, is somewhat larger in area than the bottom of box E, as shownclearly in Fig. 2.

j To the end of the lever C, opposite to that where the bar D.` isattached, there is attached by a pin (Z, a rod G, which has a screwthread e, formed on it and on the screw e, the upper end of a tube f, isfitted, said tube having an internal screw thread. The lower end of tubef, has a reverse screw thread formed in it and is tted on a screw g,formed on a rod H, the lower end of which is pivoted to one end of across head 71, of a lever I, the opposite end of the cross head beingpivoted in a socket J, on the bed piece A. The ends of the cross head h,are of rounded or semicircular form. To the bedpiece A, and just infront of the socket J, a vertical spring catch z', is attached, the useof which will be presently shown.

The implement is used as follows z--The bar D, is adjusted to the leverC, so that when the lever I, is fully depressed the box E. will be atsuch a height to receive the pile of sheets K, to be trimmed. The pileof sheets K, is then placed under the box E, and the lever J, depressedby the hand of the operator. This movement of lever I, forces the box E,down firmly on the sheets K, and the operator then adjusts the box E, tothe reciprocating knife arranged in the usual way, said knife cuttingsuccessively the edges of the sheet at the sides of the box E, whichserves as a guide or pattern, the paper being' cut the exact size of thebox. The paper to be cut is arranged in piles by the side of theoperator, the piles being as nearly equal in height as may be, but, asthere will always be some difference that difference is readilycompensated for by the tube f, which by being turned will regulate themovement or stroke of the box very nicely, so that the box E, may alwaysbe made to press firmly on the pile K. The box E, is sustained at alproper height in order to allow the piles K, of paper to be adjustedunderneath it. in consequence of the spring catch z', catching over theend of the cross head 71., of lever I, when said lever is elevated.

The device it will be seen may be manipulated with great facility, thepiles of paper received or clamped beneath the pressure box, thepressure of which may be regulated and made sufficient at any time whennecessary by adjusting tube f.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is,

The pressure box E, placed over the bed F. and attached to the lever I,through the medium of the bar D, lever C, and adjusting rods G, I-I,actuated by the nutor tube f, the above parts being arranged to operateas shown. and with or without the spring catch z', for the purpose setforth.

ARNOLD PALMER.

Witnesses:

ISAAC C. IvEs, CHAS. H. SABIN.

